636134994504 has 64 divisors (see below), whose sum is σ = 1770513552000. Its totient is φ = 211628370240.

The previous prime is 636134994491. The next prime is 636134994529. The reversal of 636134994504 is 405499431636.

It is a happy number.

636134994504 is a `hidden beast` number, since 6 + 3 + 6 + 1 + 3 + 49 + 94 + 504 = 666.

It is a super-2 number, since 2×636134994504² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2783052 + ... + 3002939.

It is an arithmetic number, because the mean of its divisors is an integer number (27664274250).

Almost surely, 2^636134994504 is an apocalyptic number.

It is an amenable number.

636134994504 is an abundant number, since it is smaller than the sum of its proper divisors (1134378557496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636134994504 is a wasteful number, since it uses less digits than its factorization.

636134994504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786515 (or 5786505 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 636134994504 in words is "six hundred thirty-six billion, one hundred thirty-four million, nine hundred ninety-four thousand, five hundred four".